Comparison is below.
The top one is the gorgeous Dark War Glaive with silver claws. I've tweaked to to ever so slightly flicker when on to mimic the original trilogy blade flicker, as well as modified some of the motion sensitives as well as swapped out the spin sound with the one from the ancient saber sound fount (I like it better than the default obsidian one)
The lower saber is my 20 year old hand-built electrical plasma-nightmare:
Most of my old one is battery. It requires 8 AA (12V) to power the HF generator that lit the tube. I would have loved to have had the LI 3.7V batteries back then. I looked into doing it with 18V (2 9V batteries in series) but they couldn't support the mAh to run it for very long. I could have powered it with 3-4 of the ones the ultrasabers run on now, and made it smaller or had space for sound too.
That's actually the second version. The first one was actually a fair bit smaller, but I had a lot of issues with it and came up with a new housing and shielding layout to deal with them. The first prototype tended to shock the user when it was running and would reek of ozone because it was ionizing the air near the contact points in the hilt in the blade socket, and sometimes arc out to the casing itself The second prototype (the one pictured above) fixed all those issues, no more shock or ozone. It was still an EMF nightmare, though. It made capacitive touch-lamps in its vicinity go crazy; as it was waved around the lamps would randomly turn on and off and rotate 3 way bulbs through their various levels. It could also light up any nearby florescent bulbs if it was brought within eight inches of them.
The UltraSabers one is so much more friendly and safer than my old one. Nevermind brighter, and has sound! But, there's still the bit of pride in knowing I built a saber (an actual plasma-generating saber) completely from scratch with just a dremel, a soldering iron, a drill, and a cheap pipe cutter (and some misc electronic bits bought from various places).